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A low-profile circularly polarized transmitarray antenna using rotated cross dipole elements

机译:使用旋转交叉偶极子元件的低剖面圆极化发射阵列天线

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A low profile circularly polarized (CP) transmitrarray using double-layer crossdipole elements is presented in this letter. The proposed element exhibits anoverall thickness of only 0.22λ0, which offers the advantages of light weight,easy fabrication, and low cost compared to conventional transmitarray elements.The transmission coefficient of the element is analyzed by Ansys HFSS, and theresults show that the element manifests a high transmission rate and good CPperformance. Then, by using angular rotation technique, transmitarray with thistype of element is designed, fabricated, and tested. The size of the transmitarrayis 6.6 × 6.6λ_0 at the center frequency of 10 GHz. The measured peak gain is22.5 dB at 9.5 GHz, resulting in an aperture efficiency of 36%. The measured1-dB gain and 3-dB axial ratio bandwidths are 10.2% and 12%, respectively.
机译:这封信介绍了使用双层交叉偶极子元件的低剖面圆极化(CP)发射器阵列。与传统的发射阵列元件相比,所提出的元件整体厚度仅为0.22λ0,具有重量轻,制造容易和成本低的优点。通过Ansys HFSS分析该元件的透射系数,结果表明该元件具有高传输速率和良好的CP性能。然后,通过使用角旋转技术,设计,制造和测试具有这种类型的元件的发射阵列。在中心频率为10 GHz时,发射阵列的大小为6.6×6.6λ_0。在9.5 GHz处测得的峰值增益为22.5 dB,因此孔径效率为36%。测得的1 dB增益和3 dB轴向比率带宽分别为10.2%和12%。

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